Emil peietz



(No Model.)

E. PRIETZ. LATHE ATTACHMENT.

No. 431,392. Patented July l, 1890.

UNITED STATES PATENT OFFICE.

EMIL PRIETZ, OF OHRISTIANSTADT, PRUSSIA, GERMANY.

LATH E ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 431,392, dated July 1,1890..

Application filed July 18, 1889. Serial No. 317,953. (No model.)

.To all whom it may oon/cern.:

Be it known that I, EMIL PRIETZ, of Christianstadtonthe-]3ober, in theKingdom of Prussia and German Empire, have invented new and usefulImproved Means and Apparatus for Shaping Vood, Metal, and the Like,

of which the following is a specification, reference being had thereinto the accompany ing drawings.

My invention consists in combining with the cutter-spindle having adriving-wheel at its end a supplemental driving means, also connectedwith said spindle for driving it at a different rate of speed.

In the drawings, Figure l is a plan view of the mechanism attached to alathe; Fig. 2, a side elevation of the same; Fig. 3, a front View ofpart of the same; Fig. 4., a detail sectional view on line @c of Fig. 2.

In the drawings, the cutter X is held upon the main spindle fn, by nuts0^ v". This spindle has bearings inthe ends mx of the mainsupporting-frame Z2, one end being engaged by the needle-pointed screwp, extending through the bearings w. The main frame h consists of thetwo arms b,which have the bearings a," ce thereon, said arms extendingrearwardly and toward. each other to unite with the main part b of theframe. A third bearing b5 is provided for the spindle n, this also beingattached to the frame b by the yoke b4, extending from the front end ofthe main part ZJ of said frame. The spindle has an ordinarydriving-wheel o, through which motion may be communicated to it. Thesupplemental driving mcans consists of the bevelpinions z on the spindlen, meshing with the pinion z, which is on the supplemental spindle orshaft y, extending at right angles to the cutter-spindle andsupported bythe main part of the frame. ward end of the frame is formed so that thepiniona'can be con venientlypositioned within it. The properposition ofthe spindle can be determined by the adjustable collar q, which bearsupon the bearing b5 by the screw p, while the beveled pinion z can beadjusted by the adjustable collar b. Motion is coinmunieated to thespindle y by a pinion c at its rear end, which pinion is driven by thepinion d on a spindle y', which in turn is The yoke h4 at the for-`driven by a crank t. The spindle. y of the drivingpinion (l is supportedin a bracket t'. This bracket has a collar w, which fits on the outsideof the rear part of the frame l). This collar has a lug or lugs Zprojecting there from, adapted to be alongside of the lugs m on theframe l), the attachment being con1- pleted by a screw Z.

A bolt or projection d is fixed upon the frame 1),.and by this theentire mechanism can be attached to the carrier of a lathe by theclamp-plate c, as shown. This allows the apparatus to be placed in anyposition. Another bolt 7L is provided, Fig. 3, in the slotted guide g,fixed by screws to the support ZJ, and this insures secure attachment tothe support of a lathe.

I claim as my invention l. In combination, the spindle, the cutter .frthereon, the wheel 0, attached to the spindle for driving the same, theshaft y at right angles to the spindle, the beveled pinions zz on thespindle and shaft, respectively, means for driving the shaft y, and thesupportingframe h, substantially as described.

2. In combination, the spindle, the cutter :r thereon, the shaft g/ atright angles to the spindle, the pinions z z, the supporting-frame I),and means for driving the said shaft y, consisting of the gear d, withthe crank t, suptially as described.

4.-. In combination, the spindle with the cutter the means for drivingsaid spindle, the frame having bearings ai ai and means for adjustingthe said spindle in its bearings, and the pin d., for securing saidparts to the lathe, substantially as described.

In witness whereof Ihave hereunto set my hand in presence of twowitnesses.

EMIL PRIETZ.

i/Vitnesses:

OswALD FIEEIG,

Hcmdschuhfabriccmt.` ROBERT JACOB,

Hcmdelsmcmn.

